Finding the Fourth Proportional to 10,298.17, 15,314.77 and 9,970.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,298.17 : 15,314.77 = 9,970.12 : x
2. Step 2: Convert to fraction form
   10,298.17/15,314.77 = 9,970.12/x
3. Step 3: Cross multiply
   10,298.17x = 15,314.77 × 9,970.12
4. Step 4: Simplify right side
   10,298.17x = 152,690,094.67
5. Step 5: Solve for x
   x = 152,690,094.67/10,298.17
6. Step 6: Final answer
   x = 14,826.92